Faculty Profiles - IOKA Seiichiro

Papers - IOKA Seiichiro

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Groundwater salinity and its effect on elevated concentrations of other contaminants in a coastal plain: a perspective for infrastructure protection

A F Rusydi, S-I Onodera, S Ioka, R Maria, F Firmansyah, M Saito, W Purwoko, D Sukmayadi

IOP Conference Series: Earth and Environmental Science 1065 ( 1 ) 012054 - 012054 2022.7

Thermal decomposition kinetics of synthesized calcite and fishery wastes such as shell of bivalves, and spines of a sea urchin

Hidekazu Kobatake, Akira Akahira, Seiichiro Ioka, Shinji Kirihara

Eco-Engineering 34 ( 2 ) 27 - 35 2022.4

Shadow effect of the pH distribution of surface waters around the Kakkonda geothermal field, Japan

Suzuki, Y., Ioka, S., Muraoka, H. and Asanuma, H.

Geothermics 95 102111 2021.9

Vulnerability of groundwater to iron and manganese contamination in the coastal alluvial plain of a developing Indonesian city

Rusydi, A. F., Onodera, S., Saito, M., Ioka, S., Maria, R., Ridwansyah, I. and Delinom, R.

S. N. Applied Sciences 3 ( 4 ) 2021.4

Species and potential sources of phosphorus in groundwater in and around Mataram City, Lombok Island, Indonesia

Ioka, S., Onodera, S., Saito, M., Rusydi, A. F., Bakti, H. and Wakasa, A. S.

S. N. Applied Sciences 3 ( 1 ) 2021.1

Estimation of ammonium sources in Indonesia coastal alluvial groundwater using Cl and GIS

Rusydi, A. F., Saito, M., Ioka, S., Maria, R. and Onodera, S.

17 ( 62 ) 53 - 58 2019.10

Redox potential of shallow groundwater by 1-month continuous in situ potentiometric measurements

Ioka, S., Muraoka, H. and Suzuki, Y.

Applied Water Science 7 ( 6 ) 3095 - 3101 2017.10

Geothermal resource exploration by stream pH mapping in Mutsu Hiuchi Dake volcano, Japan

Suzuki, Y., Ioka, S. and Muraoka, H.

Energies 10 ( 7 ) 1009-1 - 1009-11 2017.7

In situ redox potential measurements as a monitoring technique of hot spring water quality

Ioka, S., Muraoka, H., Matsuyama, K., and Tomita, K.

Sustainable Water Resources Management 2 ( 4 ) 353 - 358 2016.12

Comparative study of the subsurface thermal structure in northern Honshu, Japan, based on normalized temperature data and solute geothermometers

Suzuki, Y., Ioka, S. and Muraoka, H.

Energies 9 ( 5 ) 382:1 - 9 2016.5

Assessment of development potential of ground-coupled heat pump system in Tsugaru Plain, Japan

Shrestha, G., Uchida, Y., Yoshioka, M., Fujii, H. and Ioka, S.

Renewable Energy 76 249 - 257 2015.4

Detetmining the maximum depth of hydrothermal circulation using geothermal mapping and seismicity to delineate the depth to brittle-plastic transition in Northern Honshu, Japan

Suzuki, Y., Ioka, S. and Muraoka, H.

Energies 7 ( 5 ) 3503 - 3511 2014.5

An estimate of energy availability via microbial sulfate reduction at a Quaternary aquifer in northern Japan considered for low temperature thermal energy storage

Ioka, S. and Muraoka, H.

Water 6 ( 4 ) 858 - 867 2014.4

Meter-scale heterogeneity of nitrate concentrations of groundwater in aquitards

Ioka, S. and Tase, N.

Journal of Japanese Association of Hydrological Sciences 41 ( 4 ) 113 - 129 2011.11

Long-term continuous in-situ potentiometrically measured redox potential in anoxic groundwater with high methane and iron contents

Ioka, S., Sakai, T., Igarashi, T. and Ishijima, Y.

Environmental Earth Sciences 64 ( 1 ) 143 - 149 2011.9

Determination of redox potential of sulfidic groundwater in unconsolidated sediments by long-term continuous in situ potentiometric measurements

Ioka, S., Sakai, T., Igarashi, T. and Ishijima, Y.

Environmental Monitoring and Assessment 178 ( 1-4 ) 171 - 178 2011.7

Spatiotemporal variations in the abundances of the prokaryotic rRNA genes, pmoA, and mcrA in the deep layers of a peat bog in Sarobetsu-genya wetland, Japan

Akiyama,M., Shimizu, S., Sakai,T., Ioka, S., Ishijima, Y. and Naganuma, T.

Limnology 12 ( 1 ) 1 - 9 2011.4

Geomicrobiological Properties of Ultra-Deep Granitic Groundwater from the Mizunami Underground Research Laboratory (MIU), Central Japan

Fukuda, A., Hagiwara, H., Ishimura, T., Kouduka, M., Ioka, S., Amano, Y., Tsunogai, U., Suzuki, Y. and Mizuno, T.

Microbial Ecology 60 ( 1 ) 214 - 225 2010.7

Particulate organic carbon concentrations in anoxic groundwater in Quaternary deposit of Horonobe town, Hokkaido, Japan

Ioka, S., Sakai, T., Igarashi, T. and Ishijima, Y.

Journal of Groundwater Hydrology 52 ( 5 ) 205 - 210 2010.5

Hydrochemical baseline condition of groundwater at the Mizunami underground research laboratory (MIU)

Iwatsuki, T., Furue, R., Mie, H., Ioka, S. and Mizuno, T.

Applied Geochemistry 20 2283 - 2302 2005.12

Proction test of kalian system using hot spring fluid at geopressure field in Japan

Yanagisawa, N., Muraoka, H., Sasaki, M., Sugita, H., Ioka, S., Sato, M. and Osato, K.

Geothermal Research Council Transactions 36 1165 - 1170 2012.9

Wetland as natural reactive barrier: the hydrological and geomorphological landscape perspective

Ioka, S. and Tase, N.

Bringing groundwater Quality research to the Watershed Scale (Proceedings of GQ2004, the 4th International Groundwater Quality Conference, held at Waterloo, Canada, July 2004) (ed. by N.R. Thomson), IAHS Publication 297 311 - 316 2005.7

Relationship between the nitrate attenuation zone and groundwater flow in a typical hillslope-wetland plot in Japan

Ioka, S., Tase, N. and Toyama, K.

Impact of Human Activity on Groundwater Dynamics (Proceedings of a symposium held during the Six IAHS Scientific Assembly at Maastricht, The Netherlands, July 2001) (ed. by H. Gehrels, N.E. Peters, E. Hohen, K. Jensen, C. Leibundgut, J. Griffion, B. Webb and W.J. Zaadnoordijk), IAHS Publication 269 357 - 360 2001.7

Water quality of stream water and spring water in the Toritakisawa-Kasamatsu Pass, North Hakkoda Volcanoes

WATANABE Nonoka, INABA Yui, IOKA Seiichiro, WAKASA Sachi, MURAOKA Hirofumi

Journal of the Geothermal Research Society of Japan 46 ( 3 ) 127 - 133 2024.7

Water quality investigation in the Kara River, North Hakkoda Volcanoes

KOGAWA Daiki, IOKA Seiichiro, WAKASA Sachi

Journal of Japanese Association of Hydrological Sciences 54 ( 0 ) 57 - 66 2024.7

大和沢川扇状地における湧水の地球化学特性

中村美月，梅田浩司，井岡聖一郎

地下水学会誌 63 ( 4 ) 279 - 286 2021.11

Groundwater quality investigation of chemical species related to the sulfate reduction reaction at depth 10 m in the town of Fujisaki, Aomori Prefecture

Ioka, S. and Machida, I.

Journal of Japanese Association of Hydrological Sciences 49 ( 2 ) 107 - 116 2019.8

Discovery of boiling fountains in the eastern moat of Onikobe caldera, Japan, presumably originated from the aftershocks of the 2008 Iwate-Miyagi Inland Earthquake

Muraoka, H., Ioka, S. and Suzuki, Y.

Journal of the Geothermal Research Society of Japan 40 ( 3 ) 175 - 191 2018.7

Evaluation of hot spring discharge in the Hikaruma District of Matsunoyama, Tokamachi City, Niigata Prefecture, using groundwater drainage pipes installed for landslide mitigation

Ioka,S., Muraoka, H., Yanagisawa, N., Sugita, H., Sasaki, S., Miyakoshi, A., Sato, M. and Osato, K.

Journal of Groundwater Hydrology 60 ( 4 ) 511 - 516 2018.11

北八甲田火山群，新湯断層周辺における地熱熱水の化学特性と貯留層温度の評価

松田雅司，鈴木陽大，井岡聖一郎，村岡洋文

日本地熱学会誌 39 ( 2 ) 73 - 79 2017.4

Development of potential maps for groundsource heat pump system with a new approach

Shrestha, G., Uchida, Y., Yoshioka, M., Fujii, H. and Ioka, S.

Journal of the Geothermal Research Society of Japan 37 ( 4 ) 133 - 141 2015.10

The behavior of phosphorus in groundwater

Ioka, S, Onodera, S. and Muraoka, H.

Chikyu Kankyo 20 ( 1 ) 47 - 54 2015.8

Q₁₀ values for denitrification reactions-Towards the combining aquifer thermal storage and nitrate attenuation in groundwater-

Ioka, S and Muraoka, H.

Journal of Japanese Assocatio of Hydrological Sciences 44 ( 3 ) 123 - 133 2014.8

Investigation report of winter precipitation in the cold, snowy coty, Aomori

Ioka, S and Muraoka, H.

Journal of Japanese Association of Hydrologcial Sciences 43 ( 3 ) 93 - 97 2013.8

Apparent thermal conductivities in Aomori Prefecture

Ioka, S., Muraoka, H., Nanjyo, H., Fujii, H., Sakamoto, H. and Osanai, T.

Journal of the Geothermal Research Society of Japan 35 ( 3 ) 105 - 110 2013.7

Evaluation of quality of groundwater and spring water for use in open-loop type groundwater-based heat pump system in the Pacific ocean coast of Aomori Prefecture

Ioka. S., Muraoka, H., Marui, A. and Ikawa, R.

Journal of the Geothermal Reseacrh Society of Japan 35 ( 3 ) 111 - 117 2013.7

Evaluation of the effect of crossflow of groundwater on heat exchange rates in vertical ground heat exchengers

Fujii, H., Komaniwa, Y. Ioka, S., Watabe, A. and Inoue, Y.

Journal of the Geothermal Research Society of Japan 34 ( 4 ) 175 - 183 2012.10

Hydrogeological structure and groundwater flow of alluvium in the south Sarobetsu moor

Sakai, T., Ioka, S. and Igarashi, T.

Journal of the Japan Society of Engineering Geology 53 ( 4 ) 172 - 182 2012.10

Geological analysis of alluvium in the Sarobetsu moor

Sakai, T., Ioka, S., Ishijima, Y. and Igarashi, T.

Journal of the Japan Society of Engineering Geology 52 ( 1 ) 2 - 13 2011.4

Laboratory experiments based on CO₂ microbubble sequestration-characteristics of CO₂ dissolution by CO₂ microbubble-

Miyazawa, D., Ioka, S., Kiyama, Y., Takahashi, M. and Ishijima, Y.

Journal of the Mining and Materials Processing Institute of Japan 127 ( 4,5 ) 189 - 193 2011.3

A notice for conductivity in the measurement of in situ physico-chemical parameter of groundwater without pumpin

Ioka, S., Sakai, T., Igarashi, T. and Ishijima, Y.

Journal of Groundwater Hydrology 52 ( 2 ) 195 - 204 2010.5

Redox conditions in deep groundwater: resent accomplishments and future directions

Ioka, S., Iwatsuki, T., Sakai, T. and Ishijima, Y.

Journal of Japanese Association of Hydrological Sciences 37 ( 4 ) 287 - 283 2007.11

Hydrochemical changes associated with construction of a large underground facility

Iwatsuki, T., Amano, Y., Ioka, S., Saegusa, H. and Takeuchi, R.

Transactions of the Atomic Energy Society of Japan 6 ( 1 ) 73 - 84 2007.3

Evaluation of in situ sulfate reduction as redox buffer capacity in groundwater flow path

Ioka, S., Iwatsuki, T., Amano, Y. and Furue, R.

Journal of Japanese Association of Hydrological Sciences 37 ( 1 ) 3 - 8 2007.2

Methodology on geochemical sampling of groundwater for characterization of redox conditions using a deep borehole

Ioka, S., Furue, R. and Iwatsuki, T.

Journal of japanese Association of hydrological Sciences 36 ( 4 ) 181 - 190 2006.11

Stable measurement of redox potential of aqueous solution using platinum electrode with continous polishing tool

Ioka, S., Iwatsuki, T., Kato, O. and Imakita, T.

Bunseki Kagaku 55 ( 10 ) 793 - 797 2006.10

Nitrate reduction zone in groundwater at a slope-wetland plot in Tsukuba upland, Ibaraki Prefecture

Ioka, S. and Tase, N.

Journal of Groundwater Hydrology 46 ( 2 ) 131 - 144 2004.5

The role of silt and clay layer on nitrate concentration in groundwater-hydraulic barrier or biochemical barrier

Ioka, S. and Tase, N.

Journal of Groundwater Hydrology 46 ( 1 ) 37 - 50 2004.2

Experimental Ssudy on the estimation of the Infiltration process in water repellent soil, using the electrical exploration

Nagahama, N., Onodera, S., Kobayashi, M., Ando, Y., Birmano, M.D., Hamada, Y. and Ioka,S.

Journal of Japan Society of Hydrology and Water Resources 14 ( 1 ) 27 - 33 2001.1

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Papers - IOKA Seiichiro